A short while later I spotted a Kestrel hunting Starlings over the Shea Stadium LIRR station. After making a few attempts, I lost sight of him momentarily, only to find that he had caught something (probably a sparrow). I also spotted a juvenile Great Blue Heron in Flushing Bay, and a groundhog below where the Kestrel was hunting.
I spent about an hour and a half searching around the World's Fair Marina and managed to spot the pair of Mute Swans that frequent the area, Mallards, Gulls, several species of Sparrows, and 4 Lesser Yellowlegs.
Unfortunately, I never spotted the resident Hawks, so I will make another attempt this week to get an update on them.